Using a cashpoint machine:

always be aware of people behind you, and cover the keypad with
your hand

don’t get distracted - thieves often try and divert your
attention away from the cash machine so that an accomplice can take
your card

protect your PIN; cover the keypad with your hand when entering
your PIN, and don’t let anyone persuade you to re-enter it

check the cashpoint machine before you use it; look out for
anything out of place, and any signs of tampering, especially above
the keypad and around the card slot where glue or sticky residue
may be present

do not attempt to remove any device - if you suspect a cash
machine has been tampered with, call the police on 101 or contact
the bank immediately